820 / 1173
20x2.2 Gy (60% BED)/
2 years
+
66 Gy (85% BED)
Radiation tolerance of spinal cord: primates
Total dose [Gy]
50 60 70 80 90 100 110 120 130 140 150 160
Incidence of paralysis [%]
0
20
40
60
80
100
2.2 Gy/F
data from Ang et al., IJROBP 1993